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Coating sustained-released disposable fertilizer

A coating and slow-release technology, applied in nitrogen fertilizers, organic fertilizers, fertilization devices, etc., can solve the problem of high cost of slow-release fertilizers, reduce uneven dispersion, complete nutritional functions, and improve fertilizer utilization.

Active Publication Date: 2009-02-11
阎宗彪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a low-cost slow-release and synergistic fertilizer for field crops, which solves the problem that slow-release fertilizers are difficult to apply in field due to high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Cotton-specific slow-release primary fertilizer (N:P:K=17:8:15)

[0018] (1) Basic fertilizer composition: large granular urea (N≥46%), monoammonium phosphate (N≥11%, P 2 o 5 ≥44%), Potassium Chloride (K 2 O≥60%), attapulgite powder (magnesium aluminum silicate mineral powder), humic acid powder and three coating solutions of nitrogen, phosphorus and potassium designed according to the needs of cotton.

[0019] (2) Preparation of coating solution: ① Coating urea coating solution, formula: 20 parts of urea, 1.2 parts of hide glue, 3.0 parts of zinc sulfate, 2.5 parts of manganese sulfate, 15 parts of ferrous sulfate, 0.5 parts of boric acid, 0.1 parts of sodium molybdate parts, 2.5 parts of fulvic acid, 2.5 parts of citric acid, and make up the remaining amount with water; main equipment: temperature-adjusting reaction kettle or reaction tank with heating and stirring functions, liquid metering pump, pipeline filter, etc.; production process : Put the hide g...

Embodiment 2

[0023] Example 2 Slow-release primary fertilizer with special coating for corn (N:P:K=21:5:14)

[0024] (1) Basic fertilizer composition: large granular urea (N≥46%), monoammonium phosphate (N≥11%, P 2 o 5 ≥44%), Potassium Chloride (K 2 O≥60%), attapulgite powder (magnesium aluminum silicate mineral powder), humic acid powder, and three kinds of coating solutions designed according to the needs of corn: nitrogen, phosphorus, and potassium.

[0025] (2) Preparation of coating solution: ① Coating urea coating solution, formula: 20 parts of urea, 1.6 parts of gelatin, 3.0 parts of zinc sulfate, 2.5 parts of manganese sulfate, 20 parts of ferrous sulfate, 0.5 parts of boric acid, 2.5 parts of fulvic acid , 2.5 parts of ammonium citrate, and the remaining quality is filled with water; the main equipment and production process are the same as those in Example 1.2. The monoammonium phosphate coating liquid for coating, formula: 1.2 parts of gelatin, 20 parts of urea, 0.5 part of zi...

Embodiment 3

[0029] Example 3 Rice special coating slow-release primary fertilizer (N:P:K=20:9:16)

[0030] (1) Basic fertilizer composition: large granular urea (N≥46%), monoammonium phosphate (N≥11%, P 2 o 5 ≥44%), Potassium Chloride (K 2 O≥60%), attapulgite powder (magnesium aluminum silicate mineral powder), silicon fertilizer, surface treatment agent, humic acid powder and three kinds of coating solutions designed according to the needs of rice: nitrogen, phosphorus and potassium.

[0031] (2) Preparation of coating solution: ① coating urea coating solution, formula: 20 parts of urea, 1.6 parts of gelatin, 3.0 parts of zinc sulfate, 2.5 parts of manganese sulfate, 10 parts of ferrous sulfate, 0.5 parts of boric acid, 0.1 parts of sodium molybdate , 2.5 parts of citric acid, 2.5 parts of ammonium citrate, and the remaining quality is filled up with water; the main equipment and production process are the same as in Example 1. ②Coating solution of monoammonium phosphate, formula: 5 p...

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PUM

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Abstract

The invention discloses a coating slow-release disposable fertilizer which consists of a coating formed by basis fertilizers and masking liquid on the surface of the basis fertilizers, wherein, the composition of the masking liquid on the coating is expressed according to the ratio of quality portions: 0.5-10 portions of humate, 0.1-2.5 portions of natural gum, 0.1-2.5 portions of modified starch, 5-20 portions of carbamide, 0.5-4 portions of zinc sulfate, 0.5-3 portions of manganous sulfate, 0.5-20 portions of green copperas, 0.5-1 portion of boric acid, 0.1-1 portion of sodium molybdate, 2.5-3 portions of organic acid regulators, 2.5-3 portions of ammonium citrate and 87.2-30 portions of water. The masking liquid is evenly coated on the particle surface of the basis fertilizers in a coating machine. Referring to the proposal of soil measurement and fertilizer preparation, the invention can adjust prescription flexibly, organize production quantitively, keeps the fertilizer effect tobe stable in a long time, reduces the slow-release cost, realizes the modification of three main nutrients of nitrogen, phosphorus and potassium and has complete functions of slow-releasing and synergy; besides, the fertilizer improves the utilization of the fertilizer and is suitable for mechanized application and standard production.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a coated slow-release primary fertilizer, which belongs to the technical field of fertilizer preparation. Background technique [0002] Food security is currently the focus of domestic and international attention, and ensuring food security is a strategic issue to ensure social stability and sustainable development. Fertilizer, as the "grain of grain", contributes nearly 50% to the increase in grain production. At the same time, fertilizer is also the largest agricultural cost input. Therefore, reasonable and scientific fertilization is one of the important guarantees to ensure food security. At present, due to the lag in innovation of chemical fertilizer products in my country and improper application, the utilization rate of chemical fertilizers is low, which not only seriously wastes resources, increases the cost of fertilization, but also increases the risk of fertilization to the environment...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05F11/02C05C9/00C05D9/02
CPCY02P60/21
Inventor 阎宗彪乔生阎涛阎昆
Owner 阎宗彪
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